Wind-up mechanism for bias cutters



R. IREDELL ET AL 1,724,877

Aug. 13, 1929.

WIND-UP MECHANISM FOR BIAS CUTTERS 2 Sheet s-Sheec 1 Filed May 25 1926INVENTORS. v Aoaewr fee psu.

BY am; j I ATTQRNEY.

Aug. 13, 1929. R. IREDELL ET AL 1,724,377

WIND-UP MECHANISM FOR BIAS CUTTERS ,Riled May 25, 1926 2 Sheets-Sheet 2Q INVENTORS.

@5597 Z9505 [If/MP5 J: IVE/7 4941 ATTORNEY.

Patented Aug. 13, 1929.

UNITEDSTATES- PATENT OFFICE.

ROBERT IREDELL A ND IS IDORE REMARK,

or AKRON, orrro, ASSIGNORS TO THE GENERAL TIRE & RUBBER COMPANY, OFAKRON, OHIO, A CORPORATION OF OHIO.

WIND-UP MECHANISM son 7 BIAS commas.

Application filed May 25, 1926. Serial no; 111,520.

This invention relates to apparatus for use in winding up strips of biasout fabric from bias cutting machines. The invention is of particularutility in factories engaged in the manufacture of automobile tires andis especially designed for use in conjunction with the type of biascutter which is known in the art as the vertical biascutte-r, thesemachines being used for cutting fabric on an angle for use in themanufacture of tire carcasses.

In the use of bias cutters of the vertical type, it has always been aproblem to find some quick, easily operated and efficient mechanism forconveying the cut strips of fabric away from bias cutting machines ofthe vertical type, for the reason that the fabric is cuton an anglewhile it is suspended in a vertical position, the out being made by arapidly moving knife blade. The fact that the fabric is vertical andthat the cut is at an angle and performed by a slitting operation haspresented problems which have made the disposition of the cut strips offabric difficult to accomplish by machinery.

The present invention provides a very simple and eflicient mechanism forconveying the strips of fabric away from the point of cutting andwinding up of such strips, the apparatus being so designed andconstructed that it will take care of the rapid output of a verticalbias cutter and operates more efliciently than any prior constructionwhich has been offered to the art. The wind-up mechanism will lay thecut fabric strips without wrinkling and the machine is so organized thatit will take care of the output of the highest speed cutting machinewith only mechanical skill and attention on the part of the operators.

In the drawings, in which the latest and preferred form of the inventionis shown:

Figure 1 is a front elevation of a wind-up mechanism of the presentinvention assembled in proper relationship to a vertical bias cutter;and

Figure 2 is a plan view.

The vertical bias cutter referred to herein is of a type well known inthe art and it has not been thought necessary to do more than indicateits general outline. It is shown at 1 and the fabric at 2, which latteris fed vertically at the required times and to the required extent bythe well known mechanism. The end of the fabric is out ofi by a rapidlymoving knife blade which travels along a diagonal line and cutsthefabric at the region where it is clamped tightly by an intermittentlyoperated clamp bar 3. Pieces or strips of fabric in the process ofcutting and out are shown at 4.

In front of the machine is arranged a framework, indicated .by thenumeral 5, which extends across the machine, the upper rails 6 of theframework being inclined in substantial parallelism with the angle anddirection of the cut.

Secured to the upper surface of the rails 6 are two tables or supports 7and 8, one above the other and spaced apart as at 9 a suflicientdistance to admit of the passage of a strip of liner material 10 withwhich the cut strips of rubberized fabric are wound up.

The liner 10 passes from one of the two rolls 11 supported at the sideof the framework 5, through the passageway 9 and over the support 8. Thestrips of cut fabric are taken by the operators and laid upon thesupport 7, one end of the strip being laid upon the liner 10, the majorportion of the strip being laid upon the uncovered table 7.

The liner 10 passes on to a roll 12 which is cradled upon two rollers 13at the side of the machine, the shaft of the roll 12 being guided invertical guideways 14 so that as the roll builds up, the center willmove upwardly in the guideways.

The guideways are formed in brackets 15 which are horizontallyadjustable upon parallel rods 16 extending across the apparatus andreceived at their ends in vertical brackets 17 attached to the frame 5,the adjustment permitting the apparatus to be used with settings of thebias cutter for different widths of fabric strips.

The rollers 13 forming the cradle for the roll 12 are connected togetherto revolve at equal speeds by a sprocket chain 20. One of the rollers isdriven by a chain 21 from a transverse shaft 22 extending across themachine and driven by a chain 23 from the delivery shaft of a variablespeed regulating unit 24 of any well known type, the Reeves drivemechanism being indicated in the drawings. The speed variable unit is inturn driven by a motor 25 on the base of the machine.

The operators, standing or sitting at the locations 80 and 31, seize theends of each fabric strip as it is cut by the machine and lay it on thetables 7 and 8. The adhesion of the rubberized fabric to the liner 1Odraws the strips of bias cut fabric along and they are carried by theliner and wound up in the roll 12. The variable speed device enablesstopped and started during the operation of the device. The conveyorbelt can be stopped after each out until the fabric is laid upon thetable with its leading end attached to the liner. The end' of the stripslides over the smooth-surface of the table 7, so that it isstraightened out before reaching the liner.

The location of the roll 12 at the floor and the rolls'of liner 11 asshown enables the operators to remove a filled roll and replenish theliner without undue lifting. The roll 12 can be rolled out of the cradleand on to the floor without using hoisting machinery. This is conduciveto fast and economical operation. Other advantages will be apparent tothose familiar with this art and it will be understood that theinvention is not necessarily restricted to exact conformity with thedetails shown and described, but may be'var'ied and modified within thescope of the claim.

That we claim is: V

In an apparatus for rolling up strips of fabric from a vertical biascutting machine, a table in front of the machine upon which strips ofbias cutfabric are delivered from said machine, said table beinginclined and extending parallel with the front ofthe machine, said tablehaving an opening extending transversely thereof intermediate its ends,the upper portion of the table at the rear of said opening beinginclined at a relatively steep inclination and the lower portion thereofforwardly of the opening being inclined at a lesser inclination, andmeans for conducting a liner from beneath the table through the openingand over the lower portion of the table and for winding up the liner atthe lower end of the table with the strips of rubberized the machine.

In testimony whereof we afiiX our signa tures.

. ROBERT IREDELL.

rsrnoar J. REMARK.

fabric cut by

